Composition for the construction of bricks.



UNITED ST rE 'IEDWARD R. STQWELL, or PORTLAND, INDIANA.

arser orsros.

. Specification of Letters Patent.

Patented May 1, 1906.

Application filed April 18,1904; Serial No. 208.763.

To all'whoml it may] concern: ,Be it known that I, EDWARD R. STowELL,

"of Portland, county of Jay, and State of Indiana, have discovered a new and useful Com osltlon for the Construction of Bricks for ireproof and Refractory Purposes, of

which the following is aspecificstion.

'lhis composition is composed of amorphous carhorundun'i and Portland cement.

In practice the'composition is used as follows: The carl'iorundum lSfilllXGd with ten per cent. to fifteen per cent. or more Portland cement in a perfectly dry state. The composition is then wet or moistened with water and poured or tamped into molds to give it the requir d form. Where the composition is poured into molds, it should remain in same for tuwuty-four to forty-eight hours. Where it is tamped or pressed, it can be immediately removed on pallets properly prepared for the purpose and of elther wood or metal. After. removing from the molds the product should he allowed to air-dry for at east thirty days. p

Amer )hous carborundum is formed. by the action ol carbon on silica. at a high temperature. It is the product of the electricfurnace. It is highly refractory and very hard. It is not eflected by any known acids or by gases. This composition will not expand, contract, 30 or become soft under high temperatures and is suliiciently hard to withstand injury-from abrasion. j 4 Brick from this composition, is adapted to use in all construction where a hi h refrac- '5 tory material is required ordesirelile Having described the com osition," with manner of using same, whet {claim as my discovery, and wish to secure by, Letters Pet'- ent of the United States, is-

40 1. The herein-described brick corn osedoi amorphous carhorundum and Port and cs ment, substantially as described and for the. purpose specified. j j '2. The herein described composition o amorphous esrborundum and Portland ce merit, substantially as described and for the" purpose specified. p I

In testimony whereof 1 have stone m name in the presence of two subscrihing wit-15 :3}

nesses. EDWARD R. S XQWELLL- iiitnesses:

W ARREN F. Sui-m, GEO. W. HALL. 

